How to open domestic Unicom short message service abroad?

China Unicom's mobile phone needs to meet the following two conditions when sending and receiving short messages abroad:

1. Users need to open international roaming service in the visited area. If you need to inquire whether the country you are going to has opened Unicom's international roaming service, you can log in to China Unicom's online business hall. a> on the home page, select "Outbound Roaming" > enter the country you want to inquire in the country input box > click "Search" to inquire;

2. The mobile phone number needs to be enabled with international roaming function. Open the international roaming function, log in to Unicom's mobile phone business hall with your mobile phone, click Services > Handling > International Hong Kong, Macao and Taiwan Services > Switch roaming services, and select the type to handle.